Margaret buys a gold coin form the Franklin Mint that is certified to weigh 15.6 g.  When she puts i...
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Round the following numbers to the number of significant figures indicated in parentheses. PowerPoint PPT Presentation


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Margaret buys a gold coin form the Franklin Mint that is certified to weigh 15.6 g. When she puts it on a balance in the lab, it displays 14.1g. What is the percent error in Margaret’s measurement?. Round the following numbers to the number of significant figures indicated in parentheses.

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Round the following numbers to the number of significant figures indicated in parentheses.

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Round the following numbers to the number of significant figures indicated in parentheses

Margaret buys a gold coin form the Franklin Mint that is certified to weigh 15.6 g. When she puts it on a balance in the lab, it displays 14.1g. What is the percent error in Margaret’s measurement?


Round the following numbers to the number of significant figures indicated in parentheses

  • Round the following numbers to the number of significant figures indicated in parentheses.

  • 0.002876 (2)=0.0029

  • 598 (2)=6.0x102

  • 102670 (3)=103000

  • 6.75 x 10-3 (1)=7x10-3


Round the following numbers to the number of significant figures indicated in parentheses

  • Divide the following numbers and report your answers to the correct number of significant figures in scientific notation.

  • (4.0x10-6)/(8.0x10-3) = 0.5x10-35.0x10-4

  • 15.0/3.0 = 5.0


Round the following numbers to the number of significant figures indicated in parentheses

  • Subtract the following numbers and report your answers to the correct number of sig figs:

  • 1825-70 = 1755 1860

  • b. 5.0x106-2x105= 4.8 x 1065x106


Round the following numbers to the number of significant figures indicated in parentheses

  • Add the following numbers and report the answers to the correct number of sig figs.

  • 19060 + 285=19345 19350

  • 1.2x108 + 5.4x107=1.74x1081.7 x 108


Round the following numbers to the number of significant figures indicated in parentheses

  • Match the measurements with the correct SI unit:

  • 1. Length F 2. Mass B 3. Temperature H4. Time D

  • A. Liter F. Meter

  • B. Kilogram G. Cubic Centimeter

  • C. CelciusH. Kelvin

  • D. Second I. Millisecond

  • E. Kilometer J. Gram


Round the following numbers to the number of significant figures indicated in parentheses

  • Convert 3820dg to ounces using the following conversion factors and the factor label method of analysis.

  • 2.2lbs=1kg, 1000g=1kg, 10dg=1g, 16oz=1lb

  • ****Remember Sig Figs****


Round the following numbers to the number of significant figures indicated in parentheses

  • How many significant digits are in the following numbers?

  • 10200040 7

  • 0.00654040 6

  • 125.0000 7

  • 1330.0650 8

  • 0.010001 5


Round the following numbers to the number of significant figures indicated in parentheses

  • What is the density of the following substance?

  • change in y over the change in x = = 0.71g/ml

  • Is the following substance:

  • a. Rubidium=1.532g/ml b. Potassium = 0.71g/ml c. Beryllium=1.85g/ml


Round the following numbers to the number of significant figures indicated in parentheses

What is the value of 34oC in Kelvin?

K=C+273

K=34+273=307K


Round the following numbers to the number of significant figures indicated in parentheses

  • Multiply the following numbers and report the answers in scientific notation to the correct number of sig figs.

  • (4.2x106)(3x10-3) = 12.6 x 1091.26 x 1010

  • 81 x 9.00= 729 730


Round the following numbers to the number of significant figures indicated in parentheses

  • What happens to the density of an object when volume decreases?

  • (such as what happens to a balloon on a cold day)

  • Density Increases


Round the following numbers to the number of significant figures indicated in parentheses

  • Write the following numbers in correct scientific notation form.

  • 0.006420 6.420x10-3

  • 3050728 3.050728x 106

  • 101.28 x 102 1.0128x104


Round the following numbers to the number of significant figures indicated in parentheses

Determine the density of this object and report your answer to the correct number of sig figs.

60

50

4.6g


Round the following numbers to the number of significant figures indicated in parentheses

Calculate the volume of this object in cm3 and then convert to mm3

(report your answers to the correct number of sig figs)

I don’t remember the exact measurements, but….

V= L x W x H so…

78.7cm3

=78700mm3


Round the following numbers to the number of significant figures indicated in parentheses

Rewrite the following equation to solve for mass and then for volume. (2 equations)


Round the following numbers to the number of significant figures indicated in parentheses

Which of the following are derived measurements?

a. Mass d. Time

b. Length e. Temperature

c. Volume f. Density


Round the following numbers to the number of significant figures indicated in parentheses

Match the equivalent values:

1. 1 kg a. 0.1 kg

2. 1 dag b. 10000mg

3. 1 hg c. 0.0001 dag

4. 1 mg d. 10 hg


Round the following numbers to the number of significant figures indicated in parentheses

Do the following multidimensional conversion using the factor label method.

Convert 0.63lbs/qt→cg/mL

(2.2lbs=1kg, 1.1qt=1L)

****Remember Sig Figs****


Round the following numbers to the number of significant figures indicated in parentheses

How would you describe this archer’s skill in terms of accuracy and precision?

Precise, but not accurate


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